PowerTex 2004 Infiniti FX35 Car Battery BCI Group 35 / Q85 Lithium LiFePO4 Automotive Battery - PTLG35-78

Maximized Longevity: Elevate your driving experience with the Powertex Lithium Iron Phosphate car battery, an optimal solution for maximizing your vehicle's potential. Crafted for extended durability surpassing conventional car batteries, this powerhouse delivers enhanced power and prolonged longevity. With LiFePO4, revel in sustained performance and unwavering reliability that elevates your journey every mile of the way.

Optimized Performance: Elevate your driving experience with the Powertex Lithium car battery, meticulously crafted for enhanced performance and dependability. This battery offers increased power and an extended lifespan, making it the ideal selection for those aiming to optimize their vehicle's capabilities. Choose Lithium Iron Phosphate for improved and consistently reliable performance.

Jump Start Button: Never worry about external jump starting again! Our battery features an internal jump start button, activated in the event of battery discharge or BMS triggering, ensuring hassle-free operations wherever you go.

Battery Management System: Experience peace of mind with our cutting-edge Battery Management System (BMS), acting as a vigilant protector against overcharge, over-discharge, and short-circuit incidents. This intelligent system tirelessly monitors and controls battery performance, ensuring both your safety and the durability of your investment.

Grade A Cells: Trust in the highest quality and reliability with UL-certified Grade A cells, delivering unmatched performance and peace of mind.

Discover the unparalleled performance of our Powertex LiFePO4 Car Battery with transparent and comprehensive insights into key parameters:

Capacity: Unmatched energy storage capacity to fuel extended journeys and power-hungry applications.

Cycle Life: Exceptional longevity, ensuring a prolonged and reliable service life for your investment.

Charging Time: Swift and efficient charging capabilities, minimizing downtime and maximizing your driving experience.

At Powertex, we prioritize clarity and excellence, empowering customers with the information they need to make informed decisions and elevate their driving experience.

After undergoing rigorous testing, we've engineered the most efficient and secure battery solution. Our LiFePO4 battery utilizes cells that have undergone puncture testing to prevent potential fire and explosion hazards. With crush-resistant technology, it's built to withstand intense pressure, collisions, and maintain structural integrity, ensuring your safety in any situation. Additionally, boasting IP65 and IP67 waterproof ratings, it offers unparalleled protection against water damage. Certified with UN38.3, MSDS, 62133, 62619, and CE, our battery is a testament to its reliability and safety standards, providing you with peace of mind on every journey.

What our Experts Think

• Next‑generation LiFePO₄ chemistry — Offers significantly longer life and cycle durability than traditional lead‑acid batteries, lasting 2–5× longer and reducing replacement frequency and total cost of ownership.

• Ultra‑lightweight design — Weighs much less than conventional lead‑acid units, trimming under‑hood mass to improve acceleration, handling, and overall efficiency.

• Smart built‑in safety & protection — Integrated Battery Management System (BMS) safeguards against overcharge, over‑discharge, and short circuits while balancing cells for stable, safer performance.

• Convenient internal jump‑start feature — Button‑activated onboard jump start lets you restart your FX35 without external cables if the battery drains.

• Bluetooth health monitoring — Wireless app connectivity provides real‑time voltage and status information, making battery health easy to oversee.

• Maintenance‑free & eco‑friendly — No acid, no fluid topping up, and corrosion‑free materials mean minimal upkeep and lower environmental impact compared to lead‑acid alternatives.

• Reliable starting performance — Strong cranking power supports consistent, dependable engine starts across varying conditions — especially in daily driving scenarios.

• Important fitment note — As an aftermarket replacement, it may require professional installation or battery registration to ensure proper charging system integration and sensor compatibility.

Q&A

Q: What type of battery is this?
A: A 12.8 V Lithium Iron Phosphate (LiFePO₄) automotive battery in BCI Group 35 / Q85 size — a direct high‑performance replacement for cars like the 2004 Infiniti FX35 that require this battery group.

Q: How does this LiFePO₄ battery compare to traditional lead‑acid?
A: This lithium battery is much lighter, typically shedding over 30 lbs compared to lead‑acid, offers a longer lifespan (5–10 years) with many 2,000+ charge cycles, and delivers strong starting power with up to ~1200 CA.

Q: What advanced features does it include?
A: Features include a built‑in Battery Management System (BMS) for safety against overcharge/discharge and short circuits, internal jump‑start button so you don’t need external cables, and Bluetooth monitoring to view real‑time battery status on your smartphone.

Q: What are the typical specs?
A: Group 35 / Q85 LiFePO₄ batteries generally offer ~40 Ah capacity, ~1200 cranking amps (CA), ~800 CCA, and compact dimensions (~9.4″ × 6.9″ × 8.7″), with a lightweight design (around 15.4 lb).

Q: Are these batteries safe and durable?
A: Yes — PowerTex LiFePO₄ batteries are engineered with crush‑resistant cells, waterproof ratings (IP65/IP67), and multiple safety certifications (UN38.3, CE, MSDS, etc.), providing robust performance and peace of mind.

Q: What are the main benefits of switching to this battery?
A: You’ll get faster starts, less under‑hood weight, longer service life, maintenance‑free operation, and enhanced performance over conventional lead‑acid batteries — making this an excellent upgrade for your vehicle.

Maintenance Tips

• Inspect Terminals Monthly: Check for corrosion and ensure tight, clean connections.

• Keep Battery Clean: Wipe terminals and top with a dry cloth; use anti‑corrosion spray if needed.

• Ensure Secure Mounting: Make sure battery is firmly fastened to reduce vibration damage.

• Use LiFePO₄‑Compatible Charger: Maintain proper charge during storage or infrequent use.

• Avoid Deep Discharge: Do not let the battery fully drain; start or drive regularly to maintain charge.

• Monitor Voltage Occasionally: Check resting voltage and stay within recommended ranges.

• Protect from Extreme Temperatures: Avoid prolonged exposure to excessive heat or cold.

• Store Partially Charged: If removed, keep at ~50–70% charge in a cool, dry place.

• Wear Safety Gear: Use gloves and eye protection when handling.

• Follow Manufacturer Guidelines: Adhere to PowerTex charging and maintenance specifications